Flux cored wire developed rapidly in recent years a new type of welding supplies, because of its process performance, high quality welds, used widely. By product type, its structure can be divided into welding with flux cored wire, stainless steel flux-cored and flux-cored wire surfacing. Currently three manufacturing flux-cored wire can pull in the system of combined rolling and forming production line completed.

Production methods in many flux-cored wire, wrapped with steel powder production seamed flux-cored wire is the most common methods. This method is simple equipment, mature technology, stable quality production of flux-cored Welding Wire China, fully meet the requirements of modern shipbuilding and steel components with higher quality requirements; even if the production of other special purpose welding, painting silk, etc., are also very convenient and reliable.

Rolling implementation of initial processing unit

Molding machine with a machine is ready to put a good layer around the spool on the strip, by opening up layer by layer with a machine, then the introduction of rolling mill rolls between the upper and lower groups, to pass through multiple pass rolling . Power strip is run by the active roll of rolling friction and traction behind the drawing machine to give the composite. But in order to protect the strip into the mill when the stability of the state, put the spool with the release of confidential applying a reverse strip tension to tension basically stable. Installed on the shaft with a drive to put a friction damper, friction damper with steel volume is smaller and smaller diameter in order to protect the open strip tension constant.

Forming units from active and passive rolling mill alternately arranged. Passive roll strip on both sides of the hole so that the vertical edges in the direction of its motion deformation, active roll in addition to the role of the outside groove roll and also the use of strip (wire) of the rolling friction traction pressure steel (wire ) forward movement, the speed of passive roll rolling by the hole size and velocity of naturally occurring, and active roll rate is based on wire rolling cross-section changes, the degree of compaction of powder inside, and taking into account the rolling pre-tensioners The artificial creation. Set of principles is to make the wire rolling process in the variants, in each pass there is always a hole between the right size along the wire axial tension.

Changes in the rolling section of the hole is divided into three stages. The first stage is the stage before the powder increases. The phase plane into a U-shaped strip, add the powder to prepare. The added amount of powder flux cored wire welding process according to the requirements and weld performance may be. Wire for different purposes using different powder formulations at the same time, according to the welding process and weld the different physical properties to be fixed fill rate. Wire in the powder fill accuracy is an important parameter. Powder by adding body has three components: the powder hopper to powder with and servo drive system, the reliability of their work status should be given adequate attention.

The second stage, plus powder after three passes through the Mig Welding Wires and then pass rolling on jointed to form a closed tubular wire. At this point the powder in the tube is still in a loose state. If the production process equipment running unstable, it may result in uneven distribution of powder, so the accuracy of both the mechanical device or motor operation control are to protect the stability of the production line running, can not occur faster or slower speed, tension, when large when a small phenomenon.

The third stage, the production line to complete the rolling-reducing deformation. As the flux-cored wire is sewn tubular structure, and there is easy flow of the core Department of powder, so as to protect the powder-reducing process do not leak from the pipe cracks, and each time are circular hole. Also make the wire always in the process of rolling straight state level, when running in micro-wire tension state. This is controlled by each pass of the rolling speed differences to achieve, through this speed difference, the level of rolling friction increases, making the wire in the pass between the tension. Speed ??difference can be adjusted, making the production of different varieties of wire you can use a different tension.

Work unit in the rolling process, the wire of the powder from the filled U-shaped steel, steel tube wrapped in wire to by-pass in the reducing, loose powder gradually into the powder compaction, the density of the powder by the packing density into a compact density. This tube has a wire on the general physical characteristics of the finished wire.

Drawing deformation processing unit complete

For the rolling process is still in flux-cored wire can not be finished, to continue processing unit in the drawing, this is because the roll forming mill processing pass a certain degree of difficulty, not easy to ensure the accuracy, precision wire drawing die hole easier assurance system for wire geometry by pulling good accuracy; roll and pass on the pressure for the manual adjustment, there are some errors, but also rely on drawing the final guarantee the accuracy of the geometric shape and size; skin cold steel wire wrapped deformation is not enough, harden not sufficient, it will just lead wire of the (quite) enough, with a hole-type drawing die drawing deformation can improve the pass rate, rapidly increasing the rigidity of the wire.

Drawing unit for the cylinder straight-type drawing machine series arrangement, the speed of the drum by the swing of the position sensor to detect the tension before and after the wire between the reel, if the tension is too large, can increase the pass before drawing or decrease the speed of the roll after roll drawing speed pass in order to reduce tension so that the speed of matching reel, reel to pull the unit of speed in a dynamic balance, to protect the wire drawing process running smoothly.

Packaging machine incorporating silk collection

After drawing the wire after processing unit, and some have become the finished wire, such as welding wire and some other special purpose welding wire; some are semi-finished products, such as structural welding wire (carbon steel wire, stainless steel wire). To the above wire winding on the spool, to prepare for the next process. Spool winding wire is generally the weight of 0.5 tons to 1 ton. For the finished product from the wire can be heavy on the spool around to put the wire for welding machines used on the small size spool or dedicated revenues, put wire in the tube; and for semi-finished wire, then release it from the spool drawing process to the next one, continue to pull the thin wire to the finished product after receiving small-size or income on the spool, wire tube in place to prepare for welding use or packaging sales.

Spool wire closing machine finished or semi-finished wire uniform, dense to winding on the spool and the wire does not destroy the appearance and internal quality. To this end, to close on the wire machine set to do the following two processes: First, the rotating collection spool wire set into a live wire at one end sets, live sets of activity move the guide wire wheel can absorb as close thread spool speed and front-line wire drawing machine speed difference between the reel. Activities of the guide wire looper fixed guide wire wheel and narrow the gap between the wheel, put on by the live wire of electrical position sensor control unit revenue reduction, can receive wire spool reel and the last one between the wire drawing Release the stretch, two live sets from the guide wheel pull back in place. Looper between two guide rollers hold a cylinder in the middle, always wire taut, adjusting the pressure of the cylinder can control the tension of wire. This is to make the spool speed and reel speed to match the drawing, but also make the wound wire on the spool to the compaction uniformity. Second, the spool winding wire end into the cable device set by adjusting the cable, sliding speed and spool speed ratio tends to fit between. Screw the cable into the cable sector agencies and institutions rod are two types of cable. Screw from the cable sector driven rotary screw together with the wire mother of the cable into the line rotation and vertical movement, the speed by adjusting the screw drive motor speed control. Rod from the cable sector is driven by rotation of the light cylinder rod bearing on it with the clamping together of the cable into the line rotation and vertical movement, the speed of the change by adjusting the angle to the bearing face between to achieve.